129448112592 has 20 divisors (see below), whose sum is σ = 334407624320. Its totient is φ = 43149370848.

The previous prime is 129448112543. The next prime is 129448112623. The reversal of 129448112592 is 295211844921.

It is a super-2 number, since 2×129448112592² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 2696835679 = 129448112592 / (1 + 2 + 9 + 4 + 4 + 8 + 1 + 1 + 2 + 5 + 9 + 2).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1348417792 + ... + 1348417887.

It is an arithmetic number, because the mean of its divisors is an integer number (16720381216).

Almost surely, 2^129448112592 is an apocalyptic number.

129448112592 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129448112592 is an abundant number, since it is smaller than the sum of its proper divisors (204959511728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129448112592 is a wasteful number, since it uses less digits than its factorization.

129448112592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2696835690 (or 2696835684 counting only the distinct ones).

The product of its digits is 414720, while the sum is 48.

The spelling of 129448112592 in words is "one hundred twenty-nine billion, four hundred forty-eight million, one hundred twelve thousand, five hundred ninety-two".